Well head assembly



A. J. PENiCK E'IAL WELL HEAD ASSEMBLY Filed Sept, 25, 1937 4 Sheets-Shoot 1 1111 Ill/l P 2, 1941- A. J. PENICK arm. 2,254,752

WELL HEAD ASSEMBLY Filed Sept. 25, 1937 4 Sheets-Sheet 2 p 2, 1941- A. J. PENICK ETAL. ,752

WELL HEAD ASSEMBLY Filed Sept. 25, 1937 4 Sheets-Sheet 3 grwvwtow lnw tzkq 9 2, 1941- A. PENICK s-rm. 2,254,752

WELL HEAD ASSEMBLY Filed Sept. 25, 1937 4 Sheets-Sheet 4 zmrrsz" 'Patoni 0?- 1941 'UNITED STATES PATENT, OFFICE-9 Wimp m. w M

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mw mmmmm M m mw cuate councersun's recesses ill. 26, adapted to receive the correspondingly shaped arcuate dogs 2i, 2!, which are seated therein and which are normally held in their outer positions by means of the fiat springs 21, 22, which are located in said recesses and'press outwardly against said does.

The dogs are maintained. against displace-r meat from the recesses by means 0! the out a side upper and lower ribs 13, 23, which may be welded in the outer margins of said reoesses to maintain the dogs against displacement.

side diameter of thehangersupport so that-when said segments are in their inner or active pool- The upper end or the hanger support has the oppositely disposed and downwardiyconverging guide notches 24. 28, as more clearly illustrated lnflgures 3 and 4. when it'is desired tolower the tubing hanger through the support so-,-that the tubing may be lowered durther: lntmthawell for washing the'well before the tubing leper-man'ently located; the" hanger may be lowered by} means of a sectionof pipe all, attached to the upper and otthe hanger, with the dogs aligned with' the guide notches-2|, 'andwhen the dogs enter said notches, they will borretracted .in-t.

wardly and the hanger may pass on down through the hanger support tov locate the tubing at the desired places in the well for washing. purposesand the hanger and tubing maythen be elevated. The upper end of the hanger-is inwardly beveled,

as still, so that upon elevation thereof, the

hanger will'be guided through the support and the upper ends 0! the dogs 1! are upwardly and v inwardly beveled, as at 21. so that asthe hanger is elevated, when the beveled upper ends oi. said dogs contact with the'lower end of thehanger supporh'they will be retracted or forced inwardly, and the tubing hanger will moveon upwardly throuah the hanger support and I when said-dogs clear the upper end 01- said'-supp0rt,u.the springs 22 will force them outwardly and the hanger may then ,be-t'urned Equal-tor turn and seated on the hanger support; and the tubing will thus. be sus- Fulfilled from said suppormb'y thehangen-in .the we I I The support for thehanger. when iocatedon the segments 6, may be secured thereonagainst upward movement by'means oi thelocking-bolts 28. 28. These bolts are threaded through the wall of the head I, and ,their outer ends are surrounded by" packing iswhloh'islmainteined in place.by'the.glands Ill which surround said :bolts; and arescreived into thehead i.- Thdupper end oithe hangersupporthas the upwardly conva llilg ai'lnular external face ".and the inner r ends of the bolts 2! have correspondingly tapered tion the'shoulders ll otthe hanger support will 'rest'on the middle portions only or said seg .ments andithe. outer ends or the segments will clear said. support. l he segments are thus shaped in order that when withdrawn to the outor position. their inner ends will completely clear the inside wail of the head 1 sons not to restrict said head or interfere with the. lowering oi drlJling or other apparatus there'throughr As shown in Figure lL-the coupling 11} the hanger support. hanger-{and tubi g'lhave been removdand' the segments, retracted sothat'no obstruction will be oliered by the headi iothe' lowering oi drilling, apparatus intojthewell; said head having an inside dismount-resume that oijthe casing 2.7 41: operatio'ns'are carried-on in'the preseneeoi internal pr'easurejin the well; a blowout preventer I! 'm'ay'he" installed and secured inposition by means of the bolts" I! with the gasketii l'orrning a fluid-tight- Jointbetween the blowoutipreventer and-easing head.- In some instances agatevalve', asj'39, of any selected con struetio'n maybe-,l.nterp osed -'between the casing head i and the blowoutpreventerjlrand in this instance, the valve casing willtbe bolted to the casing headby thegboltsli withlthe gasket inte'rpo's'ed between thevalve andthe; casing head.

andth'e' blowout preventerwill be.;boited on to the upper end of-th'e-valveby thebqlts 3l"- and the" gasket It interposed between-the valve and blowout preventer to break the Joint between them, In this assembly last relerl'ed tor-the inside diarnet'er' of =the blowout; preventer casing, the casing 01 thevalve 39.. the casing head I. and the casing-2 will be approximately the same so that on! drilling tool or'oth'er app ratus that the casing-2 ie-large enough to receivefrnay be loweredthrough the. casinghead and the asseinbly' thereon. f l k 'It 'isto be understood that the blowout preventerillineludes a pressure headtshaped to be 1 titted therein around the drill stern ill, and said laces 3'3 which engage the face". when said bolts are screwed into their inner, or active, po-. sltion whereby-the hanger support niaybetorced downwardly and held secureiyileated on the segments .8. and tromwime .to time, as necessary.

saidbolts may be' tightened up tooompress the packing to maintain a-nuid-tight Joint -be weenthe support and head; aswell as .between the support andthanger;

As shown in'Fi'gures' i, was;some

pling an bolted to theflange at the. monothecasing 'head by'means-of suitabie bolts 1i; and

a; gasket 16 isinterposewbetweenz-thenanges oi said connected parts to'iorm a leak-proot'ioint between 'them', A-Christmantroe. as ll orpther pressure head will be l-inserted iii-place only in the event a'blpwout is actualiy'threatened; howhead, retractable supporting-means therein; a

tubular connection. may be connected to th'e.-

coupling N, and when thetubing islocated in place, the letting-in string-15 may be detaohed and withdrawn.

At times it may be desired tocarry on drilling tubular support mounted on' aaidisupporting v means. a tubu'larhangerinthe support. retractable supporting means foil" the h'ango'rarranged to engage tiie support to support -.the:hanger and the tubing}suspended-therefrom andbeing mov- .,abie inwardly ito o'le'ar the, support .:to. permit downward niovedientoi the-hanger through the support. vthe retractable nieans on said hanger havin: the upper end thereof beveled to etiect the retraction thereof upon upward movement 0! the hanger through the support.

2. A well head assembly comprising a tubular casing head, radially movable supporting means therein, means to manually move said means inwardly into active position or outwardly into inactive position, a tubular hanger support in the head arranged to be supported by said means when the latter is in said active position, the upper end of said support being upwardly and inwardly beveled, locking bolts threaded through the head and having their inner ends beveled to engage the beveled end of said support, a tubular hanger fitted through the support and having radially movable means thereon arranged, when in outer position, to rest on said support, and when in inner position to clear the support to permit the hanger to pass downwardly through the support.

3. A device of the character described comprising a tube adapted to be set in a well, a tubular support in the tube, a tubular hanger fitted through the support, retractable supporting means on the hanger arranged upon downward movement of the hanger to land on the support, retractable supporting means in the tube on which said support may rest, said support having a packing member therein arranged to form a fluid-tight joint with the tube and with the tubing hanger.

4. A device of the character described comprising a tube adapted to be set in a well, a tubular support in and located adjacent the upper end of said tube, a tubular hanger fitted through the support and having an external, retractable abutment thereon engageable with the support to sustain the hanger and the tubing depending from the hanger and means in the tube on which said support may rest, said support having a packing member incorporated therein arranged to form a fluid tight joint with the tube as well as with the hanger.

5. In combination a tubular casing head, a retractable seat therein, a tubular support shaped to enter the casing head and land on and be supported by said seat, a tubular tubing hanger shaped to fit through the support, a retractable abutment on the tubing hanger engageable with the support to support the hanger on the support, said support having packing means incorporated therein arranged to be compressed by the weight sustained by the hanger to form a fluid tight joint with the casing head and with the hanger.

6. A device of the character described comprising a tubular casing head having radially movable supporting means therein, means to move the supporting means inwardly into active position, a tubular hanger in the head arranged to be supported by said means when the latter is in active position, said hanger having an upper abutment, a support independent of the hanger and comprising upper and lower wear rings, the former of which is arranged beneath said abutment and the latter of which is arranged to land on said supporting means when the latter is in active position and sealing means between the upper and lower wear rings and effective to form a seal between the hanger and the casing head.

ARTHUR J. PENICK. KIRBY T. PENICK. 

